Generations of fans around the world who welcomed Alex Trebek into their homes for decades are collectively mourning after the Jeopardyhost passed away at the age of 80 on Sunday.

According to CNN, the cause of death was not immediately known, but Trebek announced his battle with stage 4 pancreatic cancer last year. The show announced the passing on their Twitter page. 

"Jeopardy! is saddened to share that Alex Trebek passed away peacefully at home early this morning, surrounded by family and friends," the game show's Twitter account stated. "Thank you, Alex."